Turbine running-wheel.



PATENTED JUNE 11, 1907 G. A. BAOKSTROM.

TURBINE RUNNING WHEEL.

APPLIOATION FILED 001 .3. 1904. RENEWED AIR.28,1907.

//v VLENTOR BY (2w A TTURN E Yf UHA SLES A. BACI'STROM, OF MILWAUKEE, i'VISCONSlN,

a"; zip? .m- 'i w l ai glib fit a ASSIGNOR TO BACK- SlROM-SMIlH STEAM TURBINE & MANUFACTURING COMPANY, A COR- PORATION OF WlSCONSlN.

TURBlNE RUNEMNG WHEEL.

Specification of Letters Fate-ht.

.tented June 11,1907.

Application filed October 3, 1904. Renewed April 22,1907. Serial-l lo. 369.574.

To all whom, it in ay concern:

Be it known that 1, CHARLES A. BACK- s'rRoM, a citizen of the United States, residing at Milwaukee, county of Milwaukee, and State of W'isconsin, have invented new and useful improvements in Turbine Running lYheels, of which the following is a specification.

receives the motive fluid to the point of fluid discharge.

in the following descript on, reference is had to the accompanying drawings in which my invention is shown applied to a running wheel designed for an inward delivery of niotive fluid.

Figure 1 is a detail side view of a rim portion of a turbine running wheel embodying the invention and with one side dish partially broken away to show the vanes. Fig. 2 is a detail peripheral view with the thicker side disk partially broken away to show the'vane receiving channel. Fig. 3 is a radial sectional view of a rim portion of the wheel showing one of the vanes from the concave face. Fig. 4 is a scctional'view of one of the vanes drawn sin line CUM-Q) of Fig. 5. Fig. 5 is a-detail view in radial section showing one of the vanesironi the convex face.

Like parts are identified by the same reference characters throughout the seve al views.

l and 2 are the rim walls, preferably com prising the outer portions of a pair of disks composing the sidewalls oi the wheel and between which the vanes 33 are mounted. The wall 2 is preferably lllGkGl' than the wall 1 My invention relates to improvements in and is recessed annularly, preferably being provided with. an annular channel 4 intd which a portion o of the end wall 1) oi. the vane extends and tits the channel. The end wall I; of the van projects from its convex face and fits the concave face of the succeeding vane, all the vanes being thus arranged to abut each other in the channel 4 and adjacent thereto. 'lhe wall tis also iorniedwith an inclined inner surface 0 so that in thickness it tapers from the point of motive lluid reception to the point of liuid discharge, thus increasing the dimensions ot the bucket space in the dir ction of flow.

Rivets 6 are used to hold. the rim walls 1 and 2 together. These are preferably passed through holes 7 between the concave and convex Walls of the vane, the holes being 'inadc suliicieni'tly large to permit the insertion of the rivets, without requiring machine work to correct such slight inaccuracies as may exist. The principal function of the rivets, however, is/ o bind the rim walls together, the latter be ,5 relied upon to hold the vanes in position. V

Having thusdescribed 1y i n-vention what I claim as new and desire to secure by Letters Patent is.

1. In a tur running wheel, a set of rim Walls, one oi icli is provided with a re cesscd inner lace; a series of vanes, each. having an. end wall, notched in its outer portion and formed projr. ;t into the recessed portion of the r m and fitting the re css; and means for binding the I'llli walls together; said end wall at the vane havinq its inner surface inclined iron: the fluid receiving side toward the sidelolf fluid discharge and the adjacent riin wall. 2. In a turbine running wheel; a set of rimwalls an annular series of vanes located be tween said Walls and arranged to interlock with the rim walls; and means for binding said Walls together comprising rivets extending through. longitudinal apertures in the vanes. i

3. in a turb'lie runi'iing' wheel; a set of riui walls; an annular: series of vanes locate i betWCCIhSELlLl walls and arranged to interlock with the rim walls; and means for binding said walls together comprising rivets exfrom the fluid receiving side of the Wine 2b tending through longitudinal apertures in the side of fluid .lischerge. 10 the vanes of greater diameter than the rivets. In testimony whereei I eflix my signature 4. In a turbine running Wheel, a set of rim in the presence of two witnessee.

Wells and a series of vanes secured between ClilAllLES A. BI.9I{S1.RQBL said walls; each of said vanes having a p'ro- \Vimesses:

, jeetien at one end fitting the next succeeding dike. B. ERWIN, vane, and each such prmeehon being tapered l *1). ll, lflnwm. 

